User:Shadesofgrey

I like cameras. I like using them. I like learning about the technical details. I like repairing and modifying cameras.

Camera interests

Cameras:

• Leica M6, Leica CL and Leica M8
• Paxettes
• Nikons
• Koni Omegas

Interests:

• rangefinder accuracy
• Camera patents

Works in progress

• Leica M8

• Article on series filters, references needed: Many cameras and lens use Series Filters. Series filters are glass filter in a metal mount distinguished by the absence of threads. The sizes in the series filters are denoted by a number. The number is usually in roman numerals for integers and in arabic numerals for half sizes.

From the 1930s through the late 1970s, filters were also made in a standard sizings known as series. Theses filters are round pieces of glass or resin with an unthreaded metal mount on their circumference. The filter is attached to the lens between two thread rings. Adapted from Wikipedia.

The diameter of the filter for each series is:

	Series	Diameter (mm)
	IV	20.6
	4.5	25.5
	V	30.2
	5.5	35.9
	VI	41.3
	VII	50.8
	7.5	57.0
	VIII	63.5
	IX	82.6

To do list

• Leica M8 rewrite
• rangefinder accuracy math